1#!/bin/sh 2# SPDX-License-Identifier: GPL-2.0 3 4if [ $# -lt 2 ] 5then 6 echo "Usage: headers_install.sh OUTDIR SRCDIR [FILES...]" 7 echo 8 echo "Prepares kernel header files for use by user space, by removing" 9 echo "all compiler.h definitions and #includes, removing any" 10 echo "#ifdef __KERNEL__ sections, and putting __underscores__ around" 11 echo "asm/inline/volatile keywords." 12 echo 13 echo "OUTDIR: directory to write each userspace header FILE to." 14 echo "SRCDIR: source directory where files are picked." 15 echo "FILES: list of header files to operate on." 16 17 exit 1 18fi 19 20# Grab arguments 21 22OUTDIR="$1" 23shift 24SRCDIR="$1" 25shift 26 27# Iterate through files listed on command line 28 29FILE= 30trap 'rm -f "$OUTDIR/$FILE" "$OUTDIR/$FILE.sed"' EXIT 31for i in "$@" 32do 33 FILE="$(basename "$i")" 34 sed -E \ 35 -e 's/([[:space:](])(__user|__force|__iomem)[[:space:]]/\1/g' \ 36 -e 's/__attribute_const__([[:space:]]|$)/\1/g' \ 37 -e 's@^#include <linux/compiler(|_types).h>@@' \ 38 -e 's/(^|[^a-zA-Z0-9])__packed([^a-zA-Z0-9_]|$)/\1__attribute__((packed))\2/g' \ 39 -e 's/(^|[[:space:](])(inline|asm|volatile)([[:space:](]|$)/\1__\2__\3/g' \ 40 -e 's@#(ifndef|define|endif[[:space:]]*/[*])[[:space:]]*_UAPI@#\1 @' \ 41 "$SRCDIR/$i" > "$OUTDIR/$FILE.sed" || exit 1 42 scripts/unifdef -U__KERNEL__ -D__EXPORTED_HEADERS__ "$OUTDIR/$FILE.sed" \ 43 > "$OUTDIR/$FILE" 44 [ $? -gt 1 ] && exit 1 45 rm -f "$OUTDIR/$FILE.sed" 46done 47trap - EXIT 48